Commitments and Contingencies (Planned Capital Expenditures) (Details) $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($) MW
Planned Capital Expenditures [Line Items]
Guarantor obligations, current carrying value	$ 288
FPL Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	5,340
2022	6,630
2023	6,480
2024	6,710
2025	6,695
Total	31,855
Gulf Power Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	705
2022	695
2023	625
2024	685
2025	685
Total	3,395
NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	4,700
2022	1,290
2023	490
2024	320
2025	325
Total	7,125
New Generation Expenditures [Member] \| FPL Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	640
2022	880
2023	1,030
2024	1,050
2025	760
Total	4,360
Existing Generation Expenditures [Member] \| FPL Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	880
2022	1,155
2023	1,005
2024	945
2025	695
Total	4,680
Transmission And Distribution Expenditures [Member] \| FPL Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	3,035
2022	3,665
2023	3,575
2024	3,925
2025	4,300
Total	18,500
Allowance for funds used during construction (AFUDC) - remainder of 2021	40
Allowance for funds used during construction (AFUDC) - 2022	50
Allowance for funds used during construction (AFUDC) - 2023	40
Allowance for funds used during construction (AFUDC) - 2024	55
Allowance for funds used during construction (AFUDC) - 2025	45
Nuclear Fuel Expenditures [Member] \| FPL Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	185
2022	170
2023	120
2024	145
2025	145
Total	765
General And Other Expenditures [Member] \| FPL Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	600
2022	760
2023	750
2024	645
2025	795
Total	3,550
Wind Expenditures [Member] \| NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	1,755
2022	75
2023	30
2024	30
2025	20
Total	$ 1,910
Planned new generation over 5 year period (in megawatts) \| MW	2,509
Solar Expenditures [Member] \| NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	$ 1,445
2022	660
2023	190
2024	10
2025	10
Total	$ 2,315
Planned new generation over 5 year period (in megawatts) \| MW	2,866
Battery Storage Expenditures [Member] \| NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	$ 195
2022	0
2023	0
2024	0
2025	0
Total	195
Nuclear Expenditures [Member] \| NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	190
2022	190
2023	145
2024	190
2025	200
Total	915
Pipelines [Member] \| NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	360
2022	150
2023	5
2024	0
2025	0
Total	515
Rate-Regulated Transmission [Member] \| NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	175
2022	100
2023	20
2024	15
2025	30
Total	340
Other Expenditures [Member] \| NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2021	580
2022	115
2023	100
2024	75
2025	65
Total	935
Generation Expenditures [Member] \| FPL Segment
Planned Capital Expenditures [Line Items]
Allowance for funds used during construction (AFUDC) - remainder of 2021	60
Allowance for funds used during construction (AFUDC) - 2022	50
Allowance for funds used during construction (AFUDC) - 2023	35
Allowance for funds used during construction (AFUDC) - 2024	35
Allowance for funds used during construction (AFUDC) - 2025	$ 25

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Estimated planned capital expenditures for the fourth year.

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Estimated planned capital expenditures for the remainder of the current year.

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Estimated planned capital expenditures for the second year.

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Estimated AFUDC for the remainder of the current year

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Estimated AFUDC for the remainder of the second year.

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Estimated AFUDC for the remainder of the third year

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Planned New Generation To Be Added over 5 Years in Megawatts

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Total estimated planned capital expenditures.

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The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

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